A/C, heater fan not working

DEANNM

MEMBER

CHEVROLET TRAILBLAZER

I have a 2005 trailblazer. It has a front ac/heater fan and a rear one. The had completely quit blowing any air form the ac, heater and defrost. My back one still works fine. Can you please tell me why what may have quit working to cause this? Can you also tell me the part I would need to replace. My warrenty is up by just 6000 miles.

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Tuesday, September 11th, 2007 AT 12:27 PM

2 Replies

MERLIN2021

EXPERT

This system, especially if auto temp control, is quite complicated to test even with the right scantool, if you have a warrantee, don't walk, RUN to the shop.

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Tuesday, September 11th, 2007 AT 12:54 PM

JACK42

MEMBER

If you cant hear the blower motor, start by checking all fuses. Then use a test light to check for power at the blower motor when it is turned on, in all fan speed positions. If there is power but no blower, then the motor is bad.